Prioritized Cell Association and Power Control in Uplink Heterogeneous Networks

Ho, Danh H.; Gulliver, T. Aaron

doi:10.1109/access.2019.2961968

Cited by 5 publications

(3 citation statements)

References 50 publications

(59 reference statements)

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“…As in the related literature [ 69 ], the common function is used to model the path loss, where d ji is the distance between BS j and user i . The parameters k and α are the path loss coefficient and exponent, which are considered to be 0.9 and -3, respectively.…”

Section: Simulation and Performance Evaluationmentioning

confidence: 99%

Joint downlink user association and interference avoidance with a load balancing approach in backhaul-constrained HetNets

Chinipardaz,

Amraee,

Sarlak

2024

PLoS ONE

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In heterogeneous networks (HetNets), different lower-power base stations are added in a typically unplanned manner to the well-planned macro-only network, bringing new challenges to the network functions. Small cells experience limited backhaul capacity since cost-effective backhaul is not easily accessible to them. This study focuses on the issue of user association in backhaul-constrained HetNets. It shows that it is necessary to associate users with cells using a load balancing approach in order to fully leverage the addition of small cells. The cell association needs to be done jointly with an interference management technique that protects offloaded users and those prone to harmful interference. After modeling the system and describing the interference model, the problem of cell and subband allocation is formulated. We first examine the problem in a time-sharing mode and present a centralized heuristic solution to the cell and subband allocation problem. This is accomplished by solving the convex problem using the gradual removal method. The importance of providing distributed algorithms for HetNets leads to the development of a new algorithm through the application of the dual decomposition method to a reformulated problem and the use of an admission control mechanism. In the achieved algorithm, all computations are performed locally, with each user and base station relying only on local information. This algorithm obtains near-optimal answers, as confirmed by the simulation results. Compared with conventional cell allocation methods, our distributed algorithm prevents intensive interference for all users and achieves better load balance between network tiers, resulting in improved network utility.

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Section: Simulation and Performance Evaluationmentioning

confidence: 99%

Joint downlink user association and interference avoidance with a load balancing approach in backhaul-constrained HetNets

Chinipardaz,

Amraee,

Sarlak

2024

PLoS ONE

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“…Through literature analysis, Farhan et al [1,2] verified that by implementing clustering in a heterogeneous wireless network, efficiency in scalability, fairness, and an adaptive solution with reduced complexity can be achieved. The joint clustering algorithms implemented with the parameter controlling metrics and graph theory in [2,[4][5][6][7] are also termed hybrid clustering methods in the literature, in addition to the algorithms proposed as an arrangement of centralized and distributed clustering algorithms in a single, hybrid scheme.…”

Section: Prior Workmentioning

confidence: 99%

An Interference-Managed Hybrid Clustering Algorithm to Improve System Throughput

Farhan

Rizvi

2022

Sensors

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In the current smart era of 5G, cellular devices and mobile data have increased exponentially. The conventional network deployment and protocols do not fulfill the ever-increasing demand for mobile data traffic. Therefore, ultra-dense networks have widely been suggested in the recent literature. However, deploying an ultra-dense network (UDN) under macro cells leads to severe interference management challenges. Although various centralized and distributed clustering methods have been used in most research work, the issue of increased interference persists. This paper proposes a joint small cell power control algorithm (SPC) and interference-managed hybrid clustering (IMHC) scheme, to resolve the issue of co-tier and cross-tier interference in the small cell base station cluster tiers. The small cell base stations (SBSs) are categorized based on their respective transmitting power, as high-power SBSs (HSBSs) and low-power SBSs (LSBSs). The simulation results show that by implementing the IMHC algorithm for SBSs in a three-tier heterogeneous network, the system throughput is improved with reduced interference.

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“…In [8], a prioritised cell association and power control scheme for the uplink in heterogeneous networks was presented. Two types of users, namely priority users (PUs) and normal users (NUs), were considered.…”

Section: Introductionmentioning

confidence: 99%